Question

In a photoelectric experiment using a clean metal surface, the maximum energy of the emitted photons was measured for a number of different incident frequencies, with the following results.

Frequency (1014 Hz)	Energy (eV)
11.8	2.61
10.6	2.17
9.9	1.89
9.1	1.48
8.2	1.07
6.9	0.48

Plot the graph of these results and find each of the following.

(a) Planck's constant
(b) the cutoff frequency (Hz)
(c) the work function (eV)

Answer 1